What is the price of a tonne of carbon dioxide?

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What is the price of a tonne of carbon dioxide?

The costs of reducing and offsetting CO2 emissions vary greatly. Below is a collection of price tags – can you match them to the correct services? (Prices have been gathered from various sources in November 2025.)

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1-10 €
15-30 €
40-50 €
70-90 €
50-100 €

Certificate of origin for district heating (offsetting emissions from a fossil-based heating method by acquiring certificates of origin for renewable district heat produced elsewhere)